<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <style>

    table{
      border-collapse: collapse;
      
    }
    tr,td{
      border: 1px solid #000;
    }
  </style>
</head>
<body>
  <table >
<caption>我的标题</caption>
<tr>
  <td colspan="2">100</td>
  <td>200</td>
  <td>300</td>
</tr>
<tr>
  <td rowspan="2">400</td>
  <td>500</td>
  <td>500</td>
  <td>600</td>
</tr>
<tr>
  <td>400</td>
  <td>500</td>
  <td>600</td>
</tr>
<tr>
  <td rowspan="2">400</td>
  <td>500</td>
  <td>500</td>
  <td>600</td>
</tr>
<tr>
  <td>400</td>
  <td>500</td>
  <td>600</td>
</tr>
</table>
</body>
</html>
